US5438858A - Extrusion tool for producing a hard metal rod or a ceramic rod with twisted internal boreholes - Google Patents
Extrusion tool for producing a hard metal rod or a ceramic rod with twisted internal boreholes Download PDFInfo
- Publication number
- US5438858A US5438858A US08/162,137 US16213794A US5438858A US 5438858 A US5438858 A US 5438858A US 16213794 A US16213794 A US 16213794A US 5438858 A US5438858 A US 5438858A
- Authority
- US
- United States
- Prior art keywords
- extrusion tool
- extrusion
- boreholes
- support
- producing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/147—Making drill blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/004—Article comprising helical form elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Definitions
- the invention relates to an extrusion tool for producing a hard metal rod or ceramic rod having at least one twisted internal borehole, where the outer die ring of the extrusion die exhibits a smooth cylindrical channel.
- Hard metal rods or ceramic rods having twisted, i.e. helical, internal boreholes are further processed, for example, into drills.
- the twisted internal boreholes form the subsequent flushing and/or cooling channels to feed in the cooling and flushing agent.
- From the EP 01 81 035 it is known to twist the blank, emerging from the extruder, at an angular speed adjusted to the material flow, the desired drill geometry and to the helical course of the cooling channels by means of suitable twisting devices.
- additional twisting devices and adjusted controllers and regulators are required, in addition to the actual extrusion tool.
- the result of the twisting device attacking from outside the blank emerging from the extrusion tool is the undesired formation of scratches, contact marks and constrictions.
- extrusion tool has become known from the DE 36 00 681 A1, where the extrusion compound is already helically twisted during the extrusion process.
- the extrusion tool exhibits a die, to whose inner shell is attached at least one flight, which extends helically in the squeezing direction and which forces radially from the outside a twisting motion upon the extrusion compound that is pressed through the die.
- elastic pins are provided that project into the interior of the die and exhibit the desired flushing borehole diameter. No uniform twisting motion, acting over the entire cross section of the blank, can be produced with this extrusion tool, so that the necessary geometry of the . . .
- an extrusion tool has already been proposed that exhibits internally a twisting device, which is designed as a twisting screw and with whose aid the a twisting motion is conveyed to the extrusion compound within the extrusion tool during the extrusion process and said compound leaves with twist the outer die ring exhibiting a smooth cylindrical channel.
- the helical internal boreholes are formed by means of the elastic threads, attached to the twisting device, or by means of the thread-shaped material, emerging from the twisting device and squeezed into the melt stream.
- the object of the invention is to further simplify the extrusion tool and to further improve the quality of the rod blanks thus produced.
- the carrier can be rotated around the longitudinal axis of the die, the flexible elements are formed by threads, and the outer die ring has the shape of a cylindrical ring exhibiting a smooth, cylindrical die channel.
- the carrier instead of the flexible elements forming the internal bore, the carrier exhibits channel openings or outlet openings to corresponding divided circles, from which thready, plastic material can be extruded into the extrusion melt stream.
- the thread carrier and/or the outer die ring can be designed rotatably, i.e. the thread carrier and/or the outer die ring rotate(s) around the longitudinal axis.
- the extrusion compound does not rotate, while the thread carrier and/or the internally smooth outer die ring is or are set into rotation.
- the angle of inclination of the twist channels that are produced is defined by the rotational velocity of the thread carrier and/or the outer die ring and the flow velocity of the extrusion compound.
- the thread carrier is shaped, according to another feature of the invention, as a hub tapering off in the direction of the outer die ring; that is, it exhibits the shape of a propeller hub without blades.
- the hub is designed as a hollow hub and exhibits several boreholes, lying on different divided circles, from which the threads are suspended.
- these threads carry on their ends, projecting into the outer die ring, metallic or other elements influencing the magnetic or electric field. In this manner the rotational velocity of the threads and thus indirectly the twist pitch with known velocity of extrusion of the plastic compound can be measured.
- Helical channels which are arranged downstream rotationally symmetrically in the melt stream and which exhibit high precision, are produced by means of the threads of the thread carrier that are arranged at predetermined intervals and in predetermined number.
- FIG. 1 is a diagrammic longitudinal view of the extrusion tool, which is partially broken away;
- FIG. 2 is a front view of the thread carrier with attachment points for the threads on different divided circles.
- the extrusion tool comprises in essence the housing 1, which passes over into the die 2, which is designed as one piece with said housing and tapers off conically.
- the outer die ring 3 exhibits a smooth cylindrical channel 4 and is designed either as one piece with the die 2 or as a separate piece, as illustrated.
- a mandrel 5 to which is attached the thread carrier 6.
- This thread carrier 6 exhibits the shape of a parabola along the line of a propeller hub and is hollow.
- several attachment boreholes 7, which lie on different divided circles, i.e. exhibit varying large radial distance from the longitudinal axis 8, are arranged on the thread carrier 6.
- the respective elastic threads 9 are attached in these boreholes 7, and particularly in a number that matches the number of subsequent, twisted internal boreholes.
- the threads 9 project into the outer die ring 3.
- the outer die ring 3 can be designed stationarily. However, it can also be rotatable.
- the thread carrier 6 can also be designed stationarily or rotatable.
- a drive is provided in order to set the thread carrier 8 or the outer die ring 3 rotating.
- a drive 10 which communicates by way of the shaft 11 with the thread carrier 6 and sets it rotating, as indicated by the arrow A, is disposed within the mandrel 5.
- the rotation of the outer die ring 3 is symbolized by means of arrow B.
- the ceramic or hard metal compound, located within the ring gap 12 between mandrel 5 and housing 1 or die 2, is pressed through the squeezing device, which is not shown in detail (extruder, piston, etc.) past the thread carrier 6 into further processed by sintering.
- the thread carrier 6 can be set rotating. In so doing, the carrier 6 is driven from inside by means of the drive 10 at a specific angular velocity, in order to produce the desired twist shape.
- the extrusion compound is extruded and not rotated.
- the rotational speed of the thread carrier 6 and the (axial) flow velocity of the extrusion compound determine the angle of inclination of the twist channels 13 that are produced.
- the smooth outer die ring 3 is set rotating according to arrow B.
- both the thread carrier 6 and the outer die ring 3 can be designed rotatingly, so that an overlapping of the rotational motion of the die 3 and the thread carrier 6 is obtained.
- die and thread carrier rotate in the same direction, the rotation is thus reinforced.
- die and thread carrier rotate in the opposite direction, the rotation and thus the twist of the internal boreholes is decreased.
- the thread carrier 6 can rotate, for example, at constant speed, whereas the rotational speed of the die 3 is variable and eventually compensates for twist defects.
- the rotational speed of the threads 9 and thus the twist pitch when the extrusion speed of the compound is known, the ends of the threads 9 bear in the region within the outer die ring 3 metallic or other elements influencing a magnetic field or an electric field. Then the rotational speed can be determined with an externally mounted measuring device (not shown in detail) and be changed depending on the requirements. On the whole, the result is thus a simply constructed extruder, with which rod blanks, whose shell surface is totally smooth and which exhibit internal boreholes that are twisted to high precision can be produced.
- plastic material can also be extruded into the melt stream, in order to produce the twist channels 14. At the same time this plastic material emerges in the shape of a thread from the boreholes 7 of the carrier 6, thus connecting the boreholes 7 also with channels and a suitably designed squeezing chamber or the like (not shown in detail).
- the plastic, thready material contains as the filler a metallic powder, which affects the magnetic or electric field of a measuring device that is also not depicted in detail and is used to determine the rotational speed.
- Rod blanks having a smooth shell and exact twist boreholes can also be produced with this variant of the extrusion tool.
Abstract
Description
Claims (7)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4120166A DE4120166C2 (en) | 1991-06-19 | 1991-06-19 | Extrusion tool for producing a hard metal or ceramic rod with twisted inner holes |
DE4120166.3 | 1991-06-19 | ||
PCT/EP1992/001379 WO1992022390A1 (en) | 1991-06-19 | 1992-06-17 | Extrusion die tool for producing a hard metal or ceramic rod with twisted internal bores |
Publications (1)
Publication Number | Publication Date |
---|---|
US5438858A true US5438858A (en) | 1995-08-08 |
Family
ID=6434251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/162,137 Expired - Lifetime US5438858A (en) | 1991-06-19 | 1992-06-17 | Extrusion tool for producing a hard metal rod or a ceramic rod with twisted internal boreholes |
Country Status (7)
Country | Link |
---|---|
US (1) | US5438858A (en) |
EP (1) | EP0590008B1 (en) |
JP (1) | JP3312355B2 (en) |
AT (1) | ATE133879T1 (en) |
DE (2) | DE4120166C2 (en) |
ES (1) | ES2082478T3 (en) |
WO (1) | WO1992022390A1 (en) |
Cited By (33)
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---|---|---|---|---|
US5783286A (en) * | 1996-04-04 | 1998-07-21 | Dinicola; James L. | Hollow-core plastic structural lumber alternative |
WO2000074870A1 (en) * | 1999-06-03 | 2000-12-14 | Seco Tools Ab (Publ) | Tool, and a method and device for its manufacturing |
US6248277B1 (en) * | 1996-10-25 | 2001-06-19 | Konrad Friedrichs Kg | Continuous extrusion process and device for rods made of a plastic raw material and provided with a spiral inner channel |
EP1112786A2 (en) * | 1999-12-28 | 2001-07-04 | Showa Aluminum Corporation | A method for manufacturing an extruded article changing in cross-section and an apparatus for extruding said extruded article |
US6502982B1 (en) | 1998-06-05 | 2003-01-07 | Montres Rado Sa | Structural component made of hard material for a wristwatch |
US20040000576A1 (en) * | 2002-05-14 | 2004-01-01 | The Boeing Company | Method and apparatus for producing a refined grain structure |
US6699430B2 (en) * | 1999-09-09 | 2004-03-02 | Arno Friedrichs | Method and device for producing a sintered metal blank with internally disposed helical recesses |
WO2004056513A2 (en) * | 2002-12-19 | 2004-07-08 | Gühring, Jörg | Sintered blanks having coiled cooling channels |
WO2004108329A1 (en) * | 2003-06-04 | 2004-12-16 | Seco Tools Ab | Method and device for manufacturing a blank for a tool |
US20050031423A1 (en) * | 2003-07-28 | 2005-02-10 | Sandvik Ab | Method and apparatus for making a rotary tool for chip removing machining |
US20050235722A1 (en) * | 2002-06-29 | 2005-10-27 | Arno Friedrichs | Extrusion press tool for producing a cylindrical body consisting of a plastic mass |
US20060027046A1 (en) * | 2004-05-04 | 2006-02-09 | Sandvik Intellectual Property Ab | Method and device for manufacturing a drill blank or a mill blank |
US20060162415A1 (en) * | 2003-01-02 | 2006-07-27 | Arno Friedrichs | Method and device for producing a hard metal tool |
US20070108650A1 (en) * | 2005-06-27 | 2007-05-17 | Mirchandani Prakash K | Injection molding fabrication method |
US20100044115A1 (en) * | 2008-08-22 | 2010-02-25 | Tdy Industries, Inc. | Earth-boring bit parts including hybrid cemented carbides and methods of making the same |
US20110011965A1 (en) * | 2009-07-14 | 2011-01-20 | Tdy Industries, Inc. | Reinforced Roll and Method of Making Same |
US8137816B2 (en) | 2007-03-16 | 2012-03-20 | Tdy Industries, Inc. | Composite articles |
US8221517B2 (en) | 2008-06-02 | 2012-07-17 | TDY Industries, LLC | Cemented carbide—metallic alloy composites |
US8225886B2 (en) | 2008-08-22 | 2012-07-24 | TDY Industries, LLC | Earth-boring bits and other parts including cemented carbide |
US8272816B2 (en) | 2009-05-12 | 2012-09-25 | TDY Industries, LLC | Composite cemented carbide rotary cutting tools and rotary cutting tool blanks |
US8312941B2 (en) | 2006-04-27 | 2012-11-20 | TDY Industries, LLC | Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods |
CN103008381A (en) * | 2012-12-11 | 2013-04-03 | 烟台大学 | Stirring split-flow die and method for extruding structural section by using same |
US8440314B2 (en) | 2009-08-25 | 2013-05-14 | TDY Industries, LLC | Coated cutting tools having a platinum group metal concentration gradient and related processes |
US8512882B2 (en) | 2007-02-19 | 2013-08-20 | TDY Industries, LLC | Carbide cutting insert |
US8647561B2 (en) | 2005-08-18 | 2014-02-11 | Kennametal Inc. | Composite cutting inserts and methods of making the same |
US8697258B2 (en) | 2006-10-25 | 2014-04-15 | Kennametal Inc. | Articles having improved resistance to thermal cracking |
US8790439B2 (en) | 2008-06-02 | 2014-07-29 | Kennametal Inc. | Composite sintered powder metal articles |
US8800848B2 (en) | 2011-08-31 | 2014-08-12 | Kennametal Inc. | Methods of forming wear resistant layers on metallic surfaces |
US9016406B2 (en) | 2011-09-22 | 2015-04-28 | Kennametal Inc. | Cutting inserts for earth-boring bits |
US9643236B2 (en) | 2009-11-11 | 2017-05-09 | Landis Solutions Llc | Thread rolling die and method of making same |
US9662709B2 (en) | 2009-12-29 | 2017-05-30 | Arno Friedrichs | Method for producing a fuel injection element having channels, and a fuel injection element |
CN109153085A (en) * | 2016-05-19 | 2019-01-04 | 住友电工硬质合金株式会社 | Cutting element |
CN111468732A (en) * | 2020-04-29 | 2020-07-31 | 江西耀升钨业股份有限公司 | Hard alloy cutter with internal spiral cooling liquid hole and production equipment thereof |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0634959B1 (en) * | 1992-04-08 | 1997-03-26 | Gühring, Jörg, Dr. | Process and device for the continuous production of cylindrical rods with at least one internal helical channel, and sinter blank made by this process |
EP0964318B1 (en) * | 1998-06-08 | 2004-04-28 | Montres Rado S.A. | Construction element made of a hard material for a wristwatch |
DE10229326A1 (en) * | 2002-06-29 | 2004-01-29 | Arno Friedrichs | Extrusion tool for producing a cylindrical body made of plastic mass |
JP4426210B2 (en) * | 2003-05-20 | 2010-03-03 | 日本碍子株式会社 | Molding jig and method for producing molded body using the same |
DE102010019599A1 (en) | 2010-05-05 | 2011-11-10 | Gühring Ohg | Powder metallurgical steel |
US8596935B2 (en) | 2010-10-08 | 2013-12-03 | TDY Industries, LLC | Cutting tools and cutting inserts including internal cooling |
US9180650B2 (en) | 2010-10-08 | 2015-11-10 | Kennametal Inc. | Cutting tool including an internal coolant system and fastener for a cutting tool including an internal coolant system |
DE102018202941B4 (en) | 2018-02-27 | 2024-01-25 | Kennametal Inc. | Process for producing a blank from extrusion mass and extruder |
RU192355U1 (en) * | 2019-06-14 | 2019-09-13 | Федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" (ФГАОУ ВО "ЮУрГУ (НИУ)") | Device for producing blanks of contact inserts of trolley buses |
Citations (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US281711A (en) * | 1883-07-24 | Tile-machine | ||
US1684312A (en) * | 1926-01-19 | 1928-09-11 | John J Fischer | Electrical insulator |
US2138378A (en) * | 1934-02-21 | 1938-11-29 | Johnson John Herbert | Method and means of making striped rubber products |
US2174779A (en) * | 1937-12-16 | 1939-10-03 | George Morrell Corp | Apparatus for extruding varicolored plastics |
US2778059A (en) * | 1954-02-03 | 1957-01-22 | Western Electric Co | Methods of and apparatus for making insulated multiconductor wire |
US3205692A (en) * | 1963-11-06 | 1965-09-14 | Reynolds Metals Co | Method of producing hollow extruded products |
GB1161863A (en) * | 1967-05-09 | 1969-08-20 | Rohde & Doerrenberg | Method of Manufacturing Twist Drills or Similar Tools, and Tools, especially Twist Drills Produced by Same. |
UST869007I4 (en) * | 1968-12-26 | 1969-12-16 | Apparatus and process for extruding elastomeric material | |
US3520966A (en) * | 1966-02-05 | 1970-07-21 | Induplas Spa | Method for the manufacture of tubes of plastics material |
US3574810A (en) * | 1967-03-15 | 1971-04-13 | Pneumatiques Caoutchouc Mfg | Method for manufacturing pipes possessing thermoplastic reinforcement |
US3651187A (en) * | 1969-10-16 | 1972-03-21 | Hercules Inc | Extrusion process |
US3651195A (en) * | 1967-05-30 | 1972-03-21 | Rasmussen O B | Process for producing composite filaments |
US4050867A (en) * | 1974-12-20 | 1977-09-27 | Industrie Pirelli Societa Per Azioni | Extrusion head for extruding plastomeric or elastomeric material on filaments |
FR2348775A1 (en) * | 1976-04-23 | 1977-11-18 | Powdrex Ltd | Tools made by powder metallurgy - in two stage process providing water cooling channels in the tool |
US4120628A (en) * | 1971-05-05 | 1978-10-17 | General Enterprises Corp., Ltd. | Apparatus for manufacturing plastic tubes from plastics of dissimilar properties |
EP0118035A1 (en) * | 1983-02-08 | 1984-09-12 | Gühring, Gottlieb | Drilling tool and method of making it |
DE3600681A1 (en) * | 1985-10-31 | 1987-05-07 | Krupp Gmbh | HARD METAL OR CERAMIC DRILL BLANK AND METHOD AND EXTRACTION TOOL FOR ITS PRODUCTION |
DE3601385A1 (en) * | 1986-01-18 | 1987-07-23 | Krupp Gmbh | METHOD FOR PRODUCING SINTER BODIES WITH INNER CHANNELS, EXTRACTION TOOL FOR IMPLEMENTING THE METHOD, AND DRILLING TOOL |
US4709055A (en) * | 1983-06-21 | 1987-11-24 | Hoffmann-La Roche Inc. | (Alkoxy-methyl)-phenyl-methyl-epoxybutanes |
US4921414A (en) * | 1987-05-27 | 1990-05-01 | W. Dollken & Co. Gmbh | Extrusion apparatus for producing marbeleized thermoplastic extrusions |
SU1574308A1 (en) * | 1987-12-02 | 1990-06-30 | Киевский Политехнический Институт Им.50-Летия Великой Октябрьской Социалистической Революции | Method of extruding low-ductile metals and alloys and tool for effecting same |
US5049331A (en) * | 1989-02-16 | 1991-09-17 | Firma Carl Freudenberg | Method of manufacturing a thread-reinforced, extruded rubber body |
DE4021383A1 (en) * | 1990-07-05 | 1992-01-16 | Arno Friedrichs | Extruded hard metal or ceramic rods |
US5116659A (en) * | 1989-12-04 | 1992-05-26 | Schwarzkopf Development Corporation | Extrusion process and tool for the production of a blank having internal bores |
DE4211827A1 (en) * | 1992-04-08 | 1993-10-14 | Guehring Joerg Dr | Continuous mfr. of cylindrical bars - by pressing plastic mass through nozzle part, and imparting twisting movement, to form helical internal channel |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8717444U1 (en) * | 1987-04-30 | 1989-01-12 | Fried. Krupp Gmbh, 4300 Essen, De | |
DE4120165C2 (en) * | 1990-07-05 | 1995-01-26 | Friedrichs Konrad Kg | Extrusion tool for producing a hard metal or ceramic rod |
-
1991
- 1991-06-19 DE DE4120166A patent/DE4120166C2/en not_active Expired - Fee Related
-
1992
- 1992-06-17 JP JP50076193A patent/JP3312355B2/en not_active Expired - Fee Related
- 1992-06-17 EP EP92913017A patent/EP0590008B1/en not_active Expired - Lifetime
- 1992-06-17 ES ES92913017T patent/ES2082478T3/en not_active Expired - Lifetime
- 1992-06-17 DE DE59205315T patent/DE59205315D1/en not_active Expired - Lifetime
- 1992-06-17 US US08/162,137 patent/US5438858A/en not_active Expired - Lifetime
- 1992-06-17 AT AT92913017T patent/ATE133879T1/en active
- 1992-06-17 WO PCT/EP1992/001379 patent/WO1992022390A1/en active IP Right Grant
Patent Citations (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US281711A (en) * | 1883-07-24 | Tile-machine | ||
US1684312A (en) * | 1926-01-19 | 1928-09-11 | John J Fischer | Electrical insulator |
US2138378A (en) * | 1934-02-21 | 1938-11-29 | Johnson John Herbert | Method and means of making striped rubber products |
US2174779A (en) * | 1937-12-16 | 1939-10-03 | George Morrell Corp | Apparatus for extruding varicolored plastics |
US2778059A (en) * | 1954-02-03 | 1957-01-22 | Western Electric Co | Methods of and apparatus for making insulated multiconductor wire |
US3205692A (en) * | 1963-11-06 | 1965-09-14 | Reynolds Metals Co | Method of producing hollow extruded products |
US3520966A (en) * | 1966-02-05 | 1970-07-21 | Induplas Spa | Method for the manufacture of tubes of plastics material |
US3574810A (en) * | 1967-03-15 | 1971-04-13 | Pneumatiques Caoutchouc Mfg | Method for manufacturing pipes possessing thermoplastic reinforcement |
GB1161863A (en) * | 1967-05-09 | 1969-08-20 | Rohde & Doerrenberg | Method of Manufacturing Twist Drills or Similar Tools, and Tools, especially Twist Drills Produced by Same. |
US3651195A (en) * | 1967-05-30 | 1972-03-21 | Rasmussen O B | Process for producing composite filaments |
UST869007I4 (en) * | 1968-12-26 | 1969-12-16 | Apparatus and process for extruding elastomeric material | |
US3651187A (en) * | 1969-10-16 | 1972-03-21 | Hercules Inc | Extrusion process |
US4120628A (en) * | 1971-05-05 | 1978-10-17 | General Enterprises Corp., Ltd. | Apparatus for manufacturing plastic tubes from plastics of dissimilar properties |
US4050867A (en) * | 1974-12-20 | 1977-09-27 | Industrie Pirelli Societa Per Azioni | Extrusion head for extruding plastomeric or elastomeric material on filaments |
FR2348775A1 (en) * | 1976-04-23 | 1977-11-18 | Powdrex Ltd | Tools made by powder metallurgy - in two stage process providing water cooling channels in the tool |
EP0118035A1 (en) * | 1983-02-08 | 1984-09-12 | Gühring, Gottlieb | Drilling tool and method of making it |
US4709055A (en) * | 1983-06-21 | 1987-11-24 | Hoffmann-La Roche Inc. | (Alkoxy-methyl)-phenyl-methyl-epoxybutanes |
DE3600681A1 (en) * | 1985-10-31 | 1987-05-07 | Krupp Gmbh | HARD METAL OR CERAMIC DRILL BLANK AND METHOD AND EXTRACTION TOOL FOR ITS PRODUCTION |
DE3601385A1 (en) * | 1986-01-18 | 1987-07-23 | Krupp Gmbh | METHOD FOR PRODUCING SINTER BODIES WITH INNER CHANNELS, EXTRACTION TOOL FOR IMPLEMENTING THE METHOD, AND DRILLING TOOL |
GB2218928A (en) * | 1986-01-18 | 1989-11-29 | Krupp Gmbh | A method for the production of sintered bodies with internal passages |
US4921414A (en) * | 1987-05-27 | 1990-05-01 | W. Dollken & Co. Gmbh | Extrusion apparatus for producing marbeleized thermoplastic extrusions |
SU1574308A1 (en) * | 1987-12-02 | 1990-06-30 | Киевский Политехнический Институт Им.50-Летия Великой Октябрьской Социалистической Революции | Method of extruding low-ductile metals and alloys and tool for effecting same |
US5049331A (en) * | 1989-02-16 | 1991-09-17 | Firma Carl Freudenberg | Method of manufacturing a thread-reinforced, extruded rubber body |
US5116659A (en) * | 1989-12-04 | 1992-05-26 | Schwarzkopf Development Corporation | Extrusion process and tool for the production of a blank having internal bores |
DE4021383A1 (en) * | 1990-07-05 | 1992-01-16 | Arno Friedrichs | Extruded hard metal or ceramic rods |
DE4211827A1 (en) * | 1992-04-08 | 1993-10-14 | Guehring Joerg Dr | Continuous mfr. of cylindrical bars - by pressing plastic mass through nozzle part, and imparting twisting movement, to form helical internal channel |
Non-Patent Citations (4)
Title |
---|
Patent Abstracts of Japan, JP A 1 166816, Jun. 30, 1989. * |
Patent Abstracts of Japan, JP A 63 278611, Nov. 16, 1988. * |
Patent Abstracts of Japan, JP-A-1 166816, Jun. 30, 1989. |
Patent Abstracts of Japan, JP-A-63 278611, Nov. 16, 1988. |
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Also Published As
Publication number | Publication date |
---|---|
EP0590008B1 (en) | 1996-02-07 |
DE4120166C2 (en) | 1994-10-06 |
DE4120166A1 (en) | 1993-01-07 |
DE59205315D1 (en) | 1996-03-21 |
JP3312355B2 (en) | 2002-08-05 |
WO1992022390A1 (en) | 1992-12-23 |
ATE133879T1 (en) | 1996-02-15 |
EP0590008A1 (en) | 1994-04-06 |
ES2082478T3 (en) | 1996-03-16 |
JPH06508301A (en) | 1994-09-22 |
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